My husband, who is 76 years old, has had a viral cold since November. He has continuous runny nose and yet stuffed up sinuses, and a cough. He has seen his GP 3 times now and they confirm it is still viral and he will have to wait until his body sorts it out. My question is, can he damage his ears/hearing by too much blowing too hard? His hearing seems worse now. He had a coronary artery bypass graft 2 years ago and is on some cardiac medication and anti-hypertensives.